British Defence Secretary Gavin Williamson has warned of his "very deep concerns" about Chinese technology giant Huawei being involved in the use of 5G on Britain's mobile network, The Times reported Thursday.

Facebook's woes mounted Wednesday as it faced a lawsuit alleging privacy violations related to data leaked to a consultancy working on Donald Trump's 2016 campaign, and as a new report suggested it shared more data with partners than it has acknowledged.

Apple stores in China continued with business as usual Tuesday despite a court-ordered ban on iPhone sales, but the US tech giant faces a growing nationalist backlash over the US-sought arrest of a Huawei executive.

A top executive of Chinese telecom giant Huawei sought release from Canadian detention Monday, offering to submit to strict electronic monitoring, as Beijing escalates its protests over her arrest on a US warrant.

Facebook's number two executive Sheryl Sandberg, long seen as the "adult" at the youthfully-managed firm, has found herself the center of controversy over her role in pushing back at a growing chorus of criticism of the social media giant.

A prominent feminist and author with strong political connections, Sandberg has drawn fire in particular over an embarrassing effort to probe George Soros, the billionaire investor, after he assailed the online network as a "menace to society."